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RHEL 7 : log4j (RHSA-2017:2423)

critical Nessus Plugin ID 102348

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Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An update for log4j is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Log4j is a tool to help the programmer output log statements to a variety of output targets.

Security Fix(es) :

* It was found that when using remote logging with log4j socket server the log4j server would deserialize any log event received via TCP or UDP. An attacker could use this flaw to send a specially crafted log event that, during deserialization, would execute arbitrary code in the context of the logger application. (CVE-2017-5645)

Solution

Update the affected log4j, log4j-javadoc and / or log4j-manual packages.

See Also

https://access.redhat.com/errata/RHSA-2017:2423

https://access.redhat.com/security/cve/cve-2017-5645

https://access.redhat.com/security/cve/cve-2019-17571

Plugin Details

Severity: Critical

ID: 102348

File Name: redhat-RHSA-2017-2423.nasl

Version: 3.15

Type: local

Agent: unix

Published: 8/10/2017

Updated: 5/8/2020

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:log4j-manual, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.4, cpe:/o:redhat:enterprise_linux:7.5, cpe:/o:redhat:enterprise_linux:7.6, cpe:/o:redhat:enterprise_linux:7.7, p-cpe:/a:redhat:enterprise_linux:log4j-javadoc, p-cpe:/a:redhat:enterprise_linux:log4j

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 8/7/2017

Vulnerability Publication Date: 4/17/2017

Reference Information

CVE: CVE-2017-5645, CVE-2019-17571

IAVA: 2020-A-0008-S

RHSA: 2017:2423